5-Pack Bolt Kit, 12-Point Head S/S BigBoost Available to suit 4150/4500 style

Available to suit 4150/4500 style carburettors such as Holley

Engineered for ease of fitment with O-Ring seal

Polished steel shaft is QPQ coated and guided by two sealed ball bearings

This set includes 13 x M8x1

This reverse lockout safety feature means you won't be accidentally over-shifting into reverse while making a pass at the strip

5-Pack Bolt Kit, 12-Point Head S/S BigBoost Available to suit 4150/4500 style5 16" UNC x 1. 500" UHL With 3 8" Socket Head Part Number : AR612 1500 To compliment ARP "bulk" 5 pack chrome moly and stainless steel fasteners we have assembled matching groups of nuts. They, too, come in convenient 5 pack skin cards. Take your pick from stainless steel and black oxide finished standard nuts or stainless steel Nyloc and cad plated Nyloc self locking nuts.